19822040047 has 4 divisors (see below), whose sum is σ = 19822323136. Its totient is φ = 19821756960.

The previous prime is 19822040041. The next prime is 19822040053. The reversal of 19822040047 is 74004022891.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (19822040041) and next prime (19822040053).

It is a cyclic number.

It is not a de Polignac number, because 19822040047 - 2¹¹ = 19822037999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19822039988 and 19822040015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19822040041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48898 + ... + 205024.

It is an arithmetic number, because the mean of its divisors is an integer number (4955580784).

Almost surely, 2^19822040047 is an apocalyptic number.

19822040047 is a deficient number, since it is larger than the sum of its proper divisors (283089).

19822040047 is a wasteful number, since it uses less digits than its factorization.

19822040047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283088.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 19822040047 in words is "nineteen billion, eight hundred twenty-two million, forty thousand, forty-seven".